CONFIG_ARCH_SHARK is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
Shark
configname: CONFIG_ARCH_SHARK
ARM system type
└─>Shark
In linux kernel since version 2.6.12
Support for the StrongARM based Digital DNARD machine, also known
as "Shark" (<http://www.shark-linux.de/shark.html>).
as "Shark" (<http://www.shark-linux.de/shark.html>).